Manufacture of wick-holders



L. T. WILCOX.

MANUFACTURE OF WICK HOLDERS.

APPLICATION FILED 8.10.1920.

Patented Dec.14,1920.

2 SHEETS-SHEET 1- INVENTOR L. T. WILCOX.

MANUFACTURE OF WICK HOLDERS.

APPLICATION FILED FEB. 10, 1920.

Patented Dec.14,1920.

2 SHEETS-SHEET 2- INVENTOR W @Z HIS ATTORNEKS To alt whom it may concern PATENT LEWIS r. wILoox, or PEEKSKILL, NEW YORK.

'OFFIC'E.

I MANUFACTURE OF WlfCK-HOLDERS.

Specification of'Letters Patent.

Patented Dec. 14, 1920.

Application filed Feliruary 10, 1920. Serial No. 357,614.

Be it known that I LEWIS T. WILOOX, a citizen of the United states, residing in the village of Peekskill, in the county of Westchester, State of New York, have invented an Improvement in the Manufacture of Wick-Holders and the like, of which. the following is a specification. I

The improvements relate to the manufac ture of annular trough-like structures, such as are commonly used for holding the wick of a wick oil burner used in liquid fuel heating or other stoves.

One of the primary objects of the invention is to reduce the cost of manufacturing such devices by economizing labor and materials and avoiding the loss due to the mak ing of defective articles or seconds. Another object is to form the article so that it will possess great strength and accuracy of form. Other objects of the invention will appear to those skilled in the art.

The method or process employed and the construction resulting from such method are illustrated in the accompanying drawings referred to in the following description, and forming a part which Figure 1 is a plan of one of the sheets of metal from which the article is formed, f

. or formers 5 and6 and the bead flattened by .the use of the process, the initial step of producing an oflset flange on one vertical edge having been performed. Fig. 2 is an edge view of the same.

cylinder and showing the second step. Fig. 4 is a similar view after the third step in which the seam is welded and the vertical edges united. Figs. 5 and 5 are "vertical medial sections of the inner and outer shells after the fourth step, in which a bead is made near one edge of the cylinder of Fig. 4, Fig 5 showing the inner cylinder and Fig. 5 the outer; Figs. 6 and 6 are simi lar views of the same partsas Fi s. 5 and 5 after the fifth step. Figs. 7 and a are similar views of the same parts respectively,

after the sixth step. Fig. 8 is a similar view of the parts of Figs. and 7 after the seventh step, in which the two tubes or cyl-' 'inders are placed together 9 shows the dies or formers used in the fifth step and one of the cylinders in position therein, in vertical medial section. Fig. 10 shows the same parts after this step or operation, with one ed e broken away and the parts thus expose shown on the hereof, and in Fig. 3 is a plan ofthe sheet of Figs. 1 and 2 formed into a and united. Fig.

plane of the section of Fig. 9. Fig. 11 shows the.dies, holder, and one ofthe tubes employed in the sixth step, on a section similar to that of Fi g. 9. Fig. l2 shows the twocylinders and'the holder in position for the seventh step or operation in vertical medial section.

As illustrated in the drawings a sheet of metal 1 is taken and provided with an olfset 2 on one vertical edge for the purpose of v forming a seam. This blank is then placed on a form and bent into a cylinder or tube with the oflset portion overlapping the op posite edge and the overlapping edges then welded or otherwise united. and reduced to practically a single thickness. In this operation the metal may be stretched or drawn tq a sufiicient extent so as to make it a true cylinder; These operations are performed with the blanks for both inner and outer tubes.

The inner tube is then placed in a beading machine and provided with an annular inwardly extending bead 3, while the outer tube is similarly treated and provided with an I annular outwardly extending bead 4.

This operationmay be performed by any suitable means.

The outer shell is then placed in the dies thereby (see Figs. 9 and 10) to form an annular outwardly projecting flange 7. The inner shell .is also placed in dies and acted upon in a similar manner to form the inwardly projecting flange 8, the two flanges 7 and 8 being thus formed of a double thick ness of metal. The dies employed in this operation are provided with an annular refor forming the inwardly extending flan e i from the bead extend below the bead on t e outsideof the cylinder and have a member filling thebore of the cylinder to the height ofthe lower edge of the bead while the part corresponding to the part 10 extends only to the upper edge of the bead until the two parts of the dies are brought together.

The outer cylinder is now placed in dies;

11, 12, and 13 ininverted position andits lower'edge turned'over (see Fig. 11), and I the inner tube isisimilarljvtreated. The

two cylinders arethen placed in the holder 14, with their oppositely curled lower edges registering, and the said curled-over portions subjected to the action of a soldering device in which the solder is caused to flow in between them and securely unite them,

i whiletheir upper edges are held in perfect alinement by the holder. In this manner the trough composed of two concentric tubes with mner and outer alined annular flanges is completed.

I claim as my invention 1. The method or process of making wick holders for oil stoves, which consists n taking two pieces of sheet metal, bending them into cylindrical form, one with a greater diameter than the other, forming a circumferential outwardly projecting head in the cylinder of greater diameter and a similar inwardly projecting bead in the cylinder of lesser diameter,

' 2. The method the said beads being near one end and equidistant therefrom, pressing the metal forming said beads so as to fold it together to form annular flanges, and then pressing the said tubes in position one within the. other and sealing. their ends opposite the flanges.. I ,4

r' process of making wick holders for oil stoves, which consists in taking two pieces of sheet metal, bending them with a greater into cylindrical form, one

diameter than the other, welding and reducing by pressure to substantially a single thickness, sheets fOI'IDiIIgLSBJld cylinders, forming a circumferential outwardly projecting bead in the cylinder of greaterdiameter and a ing near one similar inwardly projecting. I bead in the cylinder of lesser diameter, the said beads beend and equidistant-therefrom,

. lesser diameter,

the vertical meeting edges of the.

1920.. v, ia swm oxq pressing the metal forming said beads so as to fold it together to form annular flanges,

and then placing the said tubes in position one within the other and sealing their ends opposite the flanges.

v3. The method or process of making wick holders for oil stoves, which consists in taking two'pieces of sheet metal, bending them into cylindrical form, one with a greater diameter than the other, forming a circumferential outwardly projecting bead in the cylinder of greater diameter and a similar inwardly projecting bead in the cylinder of the said beads being .near one end and equidistant therefrom, pressing the metal forming said beads so as to fold it together to form annular flanges, and then presslng the said tubes in position one within theother and sealingtheir ends opposite the flanges by turning the said edges toward each other on concentric curves and soldering them together.v I

' 4. The method or process of forming wick holders and thelike, which consists in form;

ing two concentric cylinders of sheet metal. making'an annular projection on the outer.

surfaces in the same plane and uniting the said curved edges. v Signed -by-me this 31st day, of'January,

and simultaneously I 

